Stacker



'Ama @s m2@ H. 5. LABOMBARDE STACKER Filed Sept. l5, 1923 L Sheets-Sheet 1 y Apf m ma; www2 57g. S. LABQMBARDE STACKER Filed Sept'. l5 1923 4 Sheets-Sheet y LL.

-Egizi f NVE TOR ATTORNEY X515 E39' 92@ l H. S. LABOMARDE sTAcKEB Filed Sept. 15 1.923 4 Smets-Shes?, 3

BY /g ATTORNEY Patented Apr. 13, 1926.

UNITE l* STATES HAROLD S. LABOMBARDE, 0F NASI-I''A, NEW HAMPSHIRE.

STACKER.

Application led September 15, 1923. Serial No. 662,818.

To all whom, z't may concern:

Be it known that I, HAROLD S. LAoM- nanna, a citizen ofthe United States, and resident of Nashua, in the county of Hillsborough and State of New'Hampshire, have invented a new and useful Stacker, of which he following is a specification.

The principal object of my invention is lo improve the stacking of blanks, particularly at high speed, and especially to keep glued blanks under control to prevent popping open or separation of the glued parts.

Another object is to provide increased range so that a long as well as a short blank may be kept under control.

Other objects will be pointed out below.

A feature of my invention consists in having part of the receiving stacking means, preferably a belt, yielding to provide uniform stacking.

Another feature is means for making sure that each blank approaching the stacker will be out of the path of the next following blank.

Another feature is the wide range of adjustability of the means for delivering the blanks to the stacker.

Another feature is a'n adjustable positive drive forming part of the receiving mechanism. I

Other features will be pointed out below.

In the drawings- Figure l is an elevation of a machine embodying my invention' Figure 2 is a plan of the same;

Figure 3 is an elevation, on a larger scale, of a portion of said machine but` without any blanks;

Figure 4 is an enlarged elevation of the adjustable upper delivery mechanism;

Figure 5 is an enlarged plan of the end' of the mechanism shown in Figure 4:;

VFigure 6 is a section on line 6-6'of Figui'e 4; and

Figure 7 is an end elevation, looking in the direction of the arrow in Figure 4, of a portion of the machine hereinafter described.

As my invention is applicable for use in connection with a great variety of machines for folding blanks to fiat form with over lapping flaps connected by glue or other suitable material, such for example as that shown in U. S. Letters Patent No. 960,348, dated J une 7, 1910, it will not be necessary to illustrate in detail mechanism forfolding or mechanism for applying glue or other adhesive and therefore I show merely the delivery end of such a folding and gluing machine, frame A, support A', driving shaft A2 and feed rolls A3 and A4 being shown in Figures l or 2.

Feed rolls A3 and A4 deliver the blanks successively in their folded and glued con- `dition to the beltsy A5 and A"l which I call delivery belts because they deliver to the receiving or stacking mechanism described below. Belt A6 is carried by pulleys A7 and A8, pulley A8 being driven by any suitable gearing.

Belt A5 runs on pulleys A, A10, and A11, and A12 and cooperates with belt A to deliver theblanks successively to the receiving or stacking means, which includes belt B running on pulleys b, b and b2 and belt B running on pulleys b3, 1), b5 and 66. Pulley b2 is fixed to shaft 57 to which is fixed pinion 68 driven by chain b9 which is driven by pinion 61 which has fixed connection with stud b, the latter being pivotally mounted on arm b which is pivotally connected to shaft 57. Stud b has a suitable operative pivotal connection with arm and fixed connection with pinion Z214 driven by chain' D15. Arm bla is pivotally mounted on shaft 616 and carries a shaft b to which is fixed pinion 518 driving chain b and to which isI also fixed pinion' b1 driven by gear b2 lixed to shaft b, the latter bein fixed to bevel gear b21 meshing with' beve gear 622 fixed to shaft A2.

Journalled in fixed bearings is roller D which forces belt A5 sli htly downwardly and thereby snaps down t e rear end of each blank in order to make sure that there will be no interference by each blank with the next following blank.

Pivoted to the lframe at e is arm E carrying pulley b5 and to the arm is suitably connected, as by threading, rod e carrying weight E" which may be moved alon the rod to the desired position and there held by set screw e2. When blanks are not bein fed through the machine the weight E will hold pulley b5 up in the position shown in Figure 3 but as the blanks are fed their weight gradually forces belt B downward and thereby forces pulley b5 downward against the force of weight E so that that portion of the receiving or stacking means ward l refer to the direction in which the folded blanks pass through the machine. 'lhe forward end of belt A extends forward of belt A at least the length of one folded blank and just as the rear end of each blank leaves belt A it is snapped or forced downwardly b roll D which engages belt A at a point slightly below the line from the bottom of pulley A9 to the top of pulley A7, and thus makes sure that each blank will move downwardly out of the way of the next succeeding blank and this is particularly important because the broad receiving belt B moves at a slower rate than belt A and therefore each blank overlaps the next when the blanks are stacked on the belt B',

When the first blank is fed the belt B 1s in the position shown in Figure 3, the axis of pulley b5 being substantially vertically below the axis of pulley b2 so that pulley b5 cannot rise further, the weight E being so located as to raise pulley b5 to this position. As the first folded blank is delivered/ by belts A5 and A it is received byrblt B and then between the tworeceiving belts B and Bg. As the blanks follow one another quickly they overlap and as their weight gradually increases belt B yields downward vertically carrying with it b5 until the latter engages the lower stretch of beltv B. The result is that stacking conditions are always the same regardless of the number of blanks and there is no likelihood of any change in the angle of any incoming blank and consequently no likelihood of any blank striking belt`B in such a way as to bend the edge of the blank or to delay passage between the receiving belts. It will be understood that pulleys b2 and A9 are fixed against vertical movement and the only yielding is downwardly by belt B', which is a slack belt, the slack being taken up when the weight of the blanks forces said belt B downward between the pulleys b4 and 258.

In Figures 4 to 7 I illustrate'the adjustable mounting of the upper deliverylbelt, frame F having' bracket f forming a support for one end of shaft f2, held fixed to bracket f yby set screw f3, there being a similar bracket and set screw at the other end of said shaft, which shaft carries pulley A. Bracket f4 may be used to support pulley A12. A yoke F has two portions f5 and f embracing shaft f2, portion f6 having its ends held in gripping relation to shaft ,f2 by clamp screw f7. Yoke F has perforations to receive rods G and G which may be held in the desired position by clamping member F2 and nut F3. The rods G and G may therefore be adjusted longitudinally and angularly. Rods Gr and G have suitable tixed connection with member G2 carrying pulley A. H'

Boll AD is carried by member D through which passes bolt` D?, the lattefpasslng also through the arms of yoke D, these arms being split for engagement with rods G and G so that. when nut D5 is tightened up on bolt D2 not only will the rods be rmly gripped to prevent movement longitudinally of them but member D will be iirml gripped between the arms of yoke D3 to prevent swinging of said member D. The result is thatrrthe roll D may be placed in the desire/d position longitudinally and angularly vith relation to the rods G and G l and then fixed in that position. Pulley A10 is mounted in bearings g and g connected by cross-'piece g2, bearing g being perforated to receive rod G and to permit relative movement between it and said rod, and bearing g being similarly perforated to receive rod Gr. Rod G has abutment g2 for coiled spring g3 which also abuts against bearing g. Coiled spring g4 is similarly provided for rod G. These springs act as a take-up for belt A5.

An important advantage of my machine is that the lower; receiving member will' yield under the infiuence of the blanks, partly on account of the weight of the blanks and partly on account of 'their wedging action lbetween the upper and lower receiving memers.

Another important advantage is that both the ripper delivery mechanism and the upper receiving mechanism are adjustable to give a largely increased range for use with blanks of different sizes.

Another important advantage is that the position of delivery of the upper delivery belt is adjustable without substantial change of the length of the belt.

What I claim is:

l. Mechanism of the character described comprising delivery means; and receiving means including a slack belt yieldable at a portion of its travel under the influe ce of theblanks: and means tending' to raise said belt at said portion of its travel.

2. Mechanism of the character described comprising delivery means; and receiving means including a slack belt yieldable at a portion of its travel under the influence of the blanks; a pivoted member having at one side of its pivot a part to engage said belt at said portion of its travel and weightlio the lower belt and to the rear of the forward inname ed at the other side of thepivot and tending to raise said engaging part.

3. Mechanism of the character described comprising delivery means; an upper receiving belt carried in part by a pulley having an axis which is lined during 4operationol the mechanism; a slack lower receiving belt yieldable at a portion of its travel under the weight of the blanks; and a pivoted member having at one side of its pivot a roller to engage said belt at said portion and having at the other side of the pivot ay counterweight tending to raise vsaid roller, the latter when in its uppermost osition having its airis substantially in line vertically with the lixed axis o' said pulley and when in its lowermost position being in engage` ment with the lower 'face ci' the'upper stretch, and with the upper face of the lower stretch, of said lower receiving belt.

4. Mechanism of the character described comprising a lower delivery belt; an upper deliverybelt extendin r in advance of said lower belt at least the ength of each blank being delivered; and meansin advance of end of the upper belt tending to force downwardly the rear end of each blank as it leaves the lower delivery belt.

5. Mechanism of the character described comprising a lower delivery belt; an upper delivery belt; a pulley for the forward end of said belt, in advance ofthe lower belt; the bottom of said pulley being lower than the upper stretch ol sai lower belt; and a roller to en age the up er face of the lower' stretch of t e u perbe t between the lower` delivery belt and said pulley; the bottom of said roller being below the line from the bottom of said pulley to the upper stretch of the lower delivery pulley; the axis of said roller being fixed.

6.- Mechanism ott the character described comprising receiving means including upper and lower cooperating members, the lower member being yieldable downwardly under the iniluence of the blanks; means to' drive positively one of said members; and means for delivering the blanks to the receivin means successively and in overla pe relation.

g. Mechanism of the character described comprising a lower receiving conveyor yieldable downwardly under the in'lluence of the blanks; an upper receiving. belt; means to drive positively said up er belt; and means for delivering the blan s successively and in overlapped relatlon to said conveyor and belt.

8.' Mechanism or the character described comprising delivery means; a lower receiving conveyor; an upper receiving belt; and means including a chain for driving positively said belt.'

9. Mechanism of the character described comprising delivery means; a lower receiving conveyor; an upper belt; and means including a chainfor driving positively said y l2. Mechanismof the character described comprising receiving means; lower delivery means; and upper delivery means which is adjustable longitudinally and angularly.

13. Mechanism of the character described comprising receiving means; and a deliveiy.belt whose position el delivery is ad- 'iu'stable without substantial change of the.' 'length or said belt.

14. Mechanism of the character described comprising delivery means; and receiving i means including a slack 'belt yieldable at a portion of its travel under the influence of 'the blanks; a pivoted member having at one side of its pivot a part to engage said belt at said portion et its travel; and means at the other side of, said pivot tending to raise said engaging part.

l15. Mechanism of the character described comprising a lower delivery belt; a orwarcz pulley for said lower belt; an upper delivery belt extending inv advancel of said lower belt; a forward pulley for said upper belt;

and means to force downwardlythe rear end.

of each blank as it leaves the lower delivery belt, said means extending below the line which extends from the bottomo'f said pulley or the upper belt 'to the top of said pulley for the lower belt.

16. Mechanism of the character described comprising a lower delivery belt; an upper delivery belt extending in advance or said lower belt substantially the length of each blank being delivered; and 'means in advance of the lower belt and 'to the rear of the forward end of the upper belt tending to force downwardly the rear end of each blank as it leaves the lower delivery belt. HAROLD' S. LBOMBARDE. 

